Dr Onur Kesler was born in 1978 in Istanbul. After completing his undergraduate studies, he completed his medical education at Istanbul University Faculty of Medicine in 2003 and received the title of a medical doctor.
In the same year, he started his general surgery specialization at Istanbul Şişli Etfal Training and Research Hospital. He completed his compulsory service at Kahramanmaraş Yenişehir State Hospital. During his service, he founded the Endoscopy unit and contributed to the endoscopy training of many of his colleagues.
He was particularly interested in Laparoscopic Surgery both during his residency training and during his tenure as a General Surgeon. After working in advanced laparoscopic surgery fields such as reflux and tumour operations for a long time, he received training in bariatric surgery at Istanbul Medical Faculty. Over time, he has performed hundreds of revision (correction) surgeries with his team, in addition to obesity surgeries such as Sleeve Gastrectomy (tube stomach surgery), Roux En Y Gastric By-Pass, Mini Gastric By-Pass, for thousands of patients.
Dr Onur Kesler, after more than 2000 successful obesity and diabetes surgeries, gathered his experiences under the umbrella of Kesler Clinic with his professional team, enabling local and foreign patients to get rid of diseases such as obesity and diabetes in a short time.